| Feature | Standard Base Plate (No Chair) | AISE Part VII Chair | | :--- | :--- | :--- | | | Bending of base plate | Tension/Shear in stiffeners | | Bolt Capacity | Reduced by prying action | Near full tensile capacity | | Plate Thickness | Must be very thick to resist bending | Can be thinner (stiffeners take the load) | | Grout Pressure | High localized point loads | Distributed pressure | | Cost | Lower material, higher risk | Higher material, lower lifecycle cost |
When engineers state that the AISE 1 Volume II Part VII anchor bolt chairs are "better," they are referring to three distinct advantages over ad-hoc or light-duty designs: aisi e 1 volume ii part vii anchor bolt chairs better